Patrick f



UNITED STATES PATENT OFFICE. I

PATRICK F. \VHITE, OF \VESTERN PORT, MARYLAND, ASSIGNOR OF ONE-IIALF TOJACOB S. JAMESSON, OF SAME PLACE.

EXHAUST MECHANISM.

SPECIFICATION forming part of Letters Patent No. 440,525, dated November11, 1890.

Application filed May 31, 1890. Serial No. 353,767. (No model.)

To all whmn it may concern.-

Be it known that I, PATRICK F. WHITE, a citizen of the United States,residing at W'estern Port, in the county of Alleghany and State ofMary1and,have invented a new and useful Exhaust Mechanism, of which thefollowing is a specification.

Thisinvention relates to exhaust mechanism adapted especially to be usedin connection with locomotive-engines; and it has for its object toprovide a device of this class which shall possess superior advantagesin point of simplicity, durability, and general efficiency, and by meansof which the exhaust which is I 5 delivered in the usual manner eitherinto the smoke-stack or into the smoke-box may be controlled so as toregulate the draft.

The invention further has for an object to so construct the device as tocause the ex- 2o haust of steam to be accompanied by little or no noise.

lVith these ends in view the invention. consists in the improvedconstruction, arrangement, and combination of parts, which will behereinafter fully described, and particularly pointed out in the claims.

' In the drawings, Figure 1 is a side view of an exhaust mechanismembodying my improvements. Fig. 2 is a vertical sectional View of thesame on the line 2 2 in Fig. 1. Fig. 3 is a horizontal sectional View onthe line 3 3 in Fig. 1. Fig. 4; is a side view showing the device withthe perforated funnel detached. Fig. 5 is a detail side view showingsaid funnel 5 detached from the exhaust. Fig. 6 is a perspective detailview showing the plug detached. Fig. 7 is a sectional detail viewshowing the nozzle detached.

Like numerals of reference indicate like parts in all the figures.

l designates the body or easing of the exhaust, which is taperedupwardly, as shown, and which is provided at its lower end withperforated lugs 2, for connecting it with the exhaust-pipe. The upperend of the tapering casing terminates in a cylindrical portion 3, uponwhich is slidingly mounted a ring 4:. The casing of the exhaust isprovided with a transverse wall or partition 5, extending from 0 itslower end in an upward direction. The

upper end of said wall is provided with a central screw-threaded recessor socket 6, in which is mounted an upwardlyextending screwthreaded rod7, the upper end of which carries an inverted conical or frustum shapedplug 8, which is adjusted upon said rod and is retained in position bymeans of a jamnut 9.

1O designates the nozzle, which consists of a ring having an upwardlyand outwardly 6o beveled inner side and provided at its upper edge withthe flange 10, by means of which it is supported upon the upper edge ofthe casing. Said nozzle is held in position by means of a set-screw 10,enabling the said nozzle to be readily removed and replaced by a largeror smaller one when occasion demands.

The vertically-sliding ring at upon the upper end of the casing of theexhaust is provided with upwardly and outwardly extending arms 11, tothe upper ends of which is secured an inverted funnel 12, terminating inthe upwardly-extending discharge-pipe 13.

The conical plug 8 at the upper end of the rod 7 is provided at its edgewith a seriesof vertical notches 14, of which in the drawings heretoannexed three have been shown.

The funnel 12 or pipe 13 is provided with a corresponding number ofinwardly-extending lugs 15, which are V-shaped in cross-section, andwhich, according to the distance at which they are located above theplug 8, serve to more or less obstruct the passage of steam through thenotches 14.

16 designates afunnel-shap'ed ring provided with perforations 17. Thisring is provided at its lower edge with notches 18 to enable it to beplaced in position upon the verticallysliding ring t, which is providedwith out wardly-extending studs 19 to engage the lower edge of thefunnel 16, which may thus be retained in position upon the said ring.The notches 18 at the lower edge of the perforated funnel are for thepurpose of enabling the tunnel to be placed in position upon the ring,said notches admitting of the passage of the studs, when by partiallyturning the funnel or screen it will be retained in position.

Suitably attached to the casing 1 of the exhaust is an upwardlyextendingarm or bracket 20, to the upper end of which is pivoted a lever 21,having a forked end which straddles the discharge-pipe 15 and isconnected pivotally with the latter. The outer end of the lever 21serves as a handle, by means of which it may be convenientlymanipulated. This handle is to have suitable connections to enable it tobe operated by the engineer.

From the foregoing description, taken in connection with the drawingshereto annexed, the advantages and operation of my invention will bereadily understood by those skilled in the art to which it appertains.By adjusting the plug 8 upon the rod 7 the sides of the openingfor theescape of steam may be regulated. The steam on escaping between thenozzle and the plug 8 is deflected between the beveled walls of saidnozzle and plug in an outward direction against theinverted funnel. Aportion of the steam, however, escapes in a direct upward directionthrough the notches 14 in the plug 8, and the force with which thisportion of the steam shall be permitted to escape may be regulated byraising or lowering the ring 4, thus bringing the lugs 15 more or lessclose to the notches 14 in the plug and at the same time diminishing orincreasing the space between the inverted funnel and the conical plug.When the said ring 4 is lowered and the lugs 15 nearly closed, the slots14 and the space between the inverted funnel and the conical plug isdiminished, the steam will escape with great force, and the draft in thefurnace will be correspondingly increased, and vice versa. At the sametime it will be observed that the actual space for the exhaustofsteam-that is to say, the space between the nozzle and the conicalplug-is not altered, and the exhaust from the cylinder is therefore inno wise affected by the operation of the device.

I would have it understood that in some cases the funnel-shaped screenmay be dispensed withviz., when my invention isapplied to what is knownas high exhaust, where the discharge of the exhaust steam takes placeabove the screen, which is usually placed in the smoke-boxes oflocomotive-boih' ers for the purpose of preventing the escape of cindersthrough the stack. WVhen my invention is applied to low exhausts,however, the said perforated screen will be found to be a valuable partof the invention.

I desire it to be understood that this invention may be applied toeither single or double exhausts, and I reserve the right to any changesand modifications in the detailed construction thereof which may beresorted to without departing from the spirit of my invention.

Having thus described my invention, I claim- 1..In an exhaust mechanism,the combination of the tapering casing having the central partition, thescrew-threaded rod mounted in the latter,thefrustum-shapedplug mountedadjustably upon said rod, a verticallysliding ring mounted upon thecasing and having upwardly and outwardly extending arms, an invertedfunnel mounted upon said arms and having the discharge-pipe at its upperend, and the perforated funnel or screen mounted detachably upon thesliding ring, substantially as and for the purpose set forth.

ing lugs registering with and adapted to par-- tially close the verticalnotches in the frustum-shaped plug, substantially as and for the purposeset forth.

3 The combination of the tapering casing having a cylindrical portion atits upper end, the ring mounted to slide vertically thereon, theupwardly andoutwardly beveled nozzle mounted detachably at the upper endof the casing, the screw-threaded 'rod mounted in the casing, thefrustumshaped plug. mounted adjustably upon said rod and having verticalnotches; the arms extending upwardly from the vertically-slidin g ringand carrying the inverted funnel having the upward discharge-pipe andthe inwardly-extending. lugs registering with the vertical notches inthe frustum-shaped plug, the 'perforatedfunnel mounted detachably uponthe vertically-sliding ring, an arm or bracket vattached to the casing,and a bifurcated operating leve'r connected pivotally with said bracketand with the discharge-pipe, substantially as set forth.

4. In an exhaust mechanism, the combination with the casing, of thenozzle consisting of an upwardly and outwardly beveled or flaring ringprovided at its upper edge with a flange resting upon the upper edge ofthe casing and a set-screw toretain-the said nozzle in position,substantially as set forth.

5. In an exhaust mechanism, the combination of the casing having thedetachable flaring nozzle, the frustum sh'aped plug mounted adjustablyabove said nozzle, and an inverted funnel arranged above the latter andadjustable vertically independently of the adjustment of the plug,substantially as and for the purpose set forth.

6. In an exhaust mechanism, the combination of the casing, the flaringnozzle mounted detachably at the upper end of the latter, aninverted-frustum-shaped plug mounted adjustably above said nozzle andhaving vertical notches, and an inverted funnel having a discharge-pipeand provided with inwardlyextendinglugs registering with the notches inthe plug, said funnel being vertically ad- IIO justable independently ofthe adjustment of In testimony that I claim the foregoing as the plug,substantially as set forth. my own I have hereto affixed my signaturein7. In an exhaust mechanism constructed presence of two witnesses.substantially as described, the combination, 5 with thevertically-sliding ring carrying the PATRICK F. \VHITE.

inverted funnel and having outwardly-extending studs, of the detachableperforated Witnesses: funnel or screen provided at its lower edge J. H.SIGGERS, with notches, substantially as and for the J. EDGAR SMITH. [opurpose set forth.

